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<pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
<span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
<span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
<span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
<span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
<span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
<span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
<span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
<span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * --------------------------<a name="line.27"></a>
<span class="sourceLineNo">028</span> * NonGridContourDataset.java<a name="line.28"></a>
<span class="sourceLineNo">029</span> * --------------------------<a name="line.29"></a>
<span class="sourceLineNo">030</span> * (C) Copyright 2002-2008, by David M. O'Donnell.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Original Author:  David M. O'Donnell;<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Contributor(s):   David Gilbert (for Object Refinery Limited);<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Changes (from 24-Jul-2003)<a name="line.35"></a>
<span class="sourceLineNo">036</span> * --------------------------<a name="line.36"></a>
<span class="sourceLineNo">037</span> * 24-Jul-2003 : Added standard header (DG);<a name="line.37"></a>
<span class="sourceLineNo">038</span> * ------------- JFREECHART 1.0.x ---------------------------------------------<a name="line.38"></a>
<span class="sourceLineNo">039</span> * 31-Jan-2007 : Deprecated (DG);<a name="line.39"></a>
<span class="sourceLineNo">040</span> *<a name="line.40"></a>
<span class="sourceLineNo">041</span> */<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>package org.jfree.data.contour;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.jfree.chart.plot.XYPlot;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.jfree.chart.renderer.xy.XYBlockRenderer;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.jfree.data.Range;<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>/**<a name="line.49"></a>
<span class="sourceLineNo">050</span> * A convenience class that extends the {@link DefaultContourDataset} to<a name="line.50"></a>
<span class="sourceLineNo">051</span> * accommodate non-grid data.<a name="line.51"></a>
<span class="sourceLineNo">052</span> *<a name="line.52"></a>
<span class="sourceLineNo">053</span> * @deprecated This class is no longer supported (as of version 1.0.4).  If<a name="line.53"></a>
<span class="sourceLineNo">054</span> *     you are creating contour plots, please try to use {@link XYPlot} and<a name="line.54"></a>
<span class="sourceLineNo">055</span> *     {@link XYBlockRenderer}.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span>public class NonGridContourDataset extends DefaultContourDataset {<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    /** Default number of x values. */<a name="line.59"></a>
<span class="sourceLineNo">060</span>    static final int DEFAULT_NUM_X = 50;<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>    /** Default number of y values. */<a name="line.62"></a>
<span class="sourceLineNo">063</span>    static final int DEFAULT_NUM_Y = 50;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>    /** Default power. */<a name="line.65"></a>
<span class="sourceLineNo">066</span>    static final int DEFAULT_POWER = 4;<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>    /**<a name="line.68"></a>
<span class="sourceLineNo">069</span>     * Default constructor.<a name="line.69"></a>
<span class="sourceLineNo">070</span>     */<a name="line.70"></a>
<span class="sourceLineNo">071</span>    public NonGridContourDataset() {<a name="line.71"></a>
<span class="sourceLineNo">072</span>        super();<a name="line.72"></a>
<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span>    /**<a name="line.75"></a>
<span class="sourceLineNo">076</span>     * Constructor for NonGridContourDataset.  Uses default values for grid<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * dimensions and weighting.<a name="line.77"></a>
<span class="sourceLineNo">078</span>     *<a name="line.78"></a>
<span class="sourceLineNo">079</span>     * @param seriesName  the series name.<a name="line.79"></a>
<span class="sourceLineNo">080</span>     * @param xData  the x values.<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * @param yData  the y values.<a name="line.81"></a>
<span class="sourceLineNo">082</span>     * @param zData  the z values.<a name="line.82"></a>
<span class="sourceLineNo">083</span>     */<a name="line.83"></a>
<span class="sourceLineNo">084</span>    public NonGridContourDataset(String seriesName,<a name="line.84"></a>
<span class="sourceLineNo">085</span>                                 Object[] xData, Object[] yData,<a name="line.85"></a>
<span class="sourceLineNo">086</span>                                 Object[] zData) {<a name="line.86"></a>
<span class="sourceLineNo">087</span>        super(seriesName, xData, yData, zData);<a name="line.87"></a>
<span class="sourceLineNo">088</span>        buildGrid(DEFAULT_NUM_X, DEFAULT_NUM_Y, DEFAULT_POWER);<a name="line.88"></a>
<span class="sourceLineNo">089</span>    }<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span>    /**<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * Constructor for NonGridContourDataset.<a name="line.92"></a>
<span class="sourceLineNo">093</span>     *<a name="line.93"></a>
<span class="sourceLineNo">094</span>     * @param seriesName  the series name.<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @param xData  the x values.<a name="line.95"></a>
<span class="sourceLineNo">096</span>     * @param yData  the y values.<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * @param zData  the z values.<a name="line.97"></a>
<span class="sourceLineNo">098</span>     * @param numX  number grid cells in along the x-axis<a name="line.98"></a>
<span class="sourceLineNo">099</span>     * @param numY  number grid cells in along the y-axis<a name="line.99"></a>
<span class="sourceLineNo">100</span>     * @param power  exponent for inverse distance weighting<a name="line.100"></a>
<span class="sourceLineNo">101</span>     */<a name="line.101"></a>
<span class="sourceLineNo">102</span>    public NonGridContourDataset(String seriesName,<a name="line.102"></a>
<span class="sourceLineNo">103</span>                                 Object[] xData, Object[] yData,<a name="line.103"></a>
<span class="sourceLineNo">104</span>                                 Object[] zData,<a name="line.104"></a>
<span class="sourceLineNo">105</span>                                 int numX, int numY, int power) {<a name="line.105"></a>
<span class="sourceLineNo">106</span>        super(seriesName, xData, yData, zData);<a name="line.106"></a>
<span class="sourceLineNo">107</span>        buildGrid(numX, numY, power);<a name="line.107"></a>
<span class="sourceLineNo">108</span>    }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>    /**<a name="line.110"></a>
<span class="sourceLineNo">111</span>     * Builds a regular grid.  Maps the non-grid data into the regular grid<a name="line.111"></a>
<span class="sourceLineNo">112</span>     * using an inverse distance between grid and non-grid points.  Weighting<a name="line.112"></a>
<span class="sourceLineNo">113</span>     * of distance can be controlled by setting through the power parameter<a name="line.113"></a>
<span class="sourceLineNo">114</span>     * that controls the exponent used on the distance weighting<a name="line.114"></a>
<span class="sourceLineNo">115</span>     * (e.g., distance^power).<a name="line.115"></a>
<span class="sourceLineNo">116</span>     *<a name="line.116"></a>
<span class="sourceLineNo">117</span>     * @param numX  number grid points in along the x-axis<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * @param numY  number grid points in along the y-axis<a name="line.118"></a>
<span class="sourceLineNo">119</span>     * @param power  exponent for inverse distance weighting<a name="line.119"></a>
<span class="sourceLineNo">120</span>     */<a name="line.120"></a>
<span class="sourceLineNo">121</span>    protected void buildGrid(int numX, int numY, int power) {<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span>        int numValues = numX * numY;<a name="line.123"></a>
<span class="sourceLineNo">124</span>        double[] xGrid = new double[numValues];<a name="line.124"></a>
<span class="sourceLineNo">125</span>        double[] yGrid = new double [numValues];<a name="line.125"></a>
<span class="sourceLineNo">126</span>        double[] zGrid = new double [numValues];<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span>        // Find min, max for the x and y axes<a name="line.128"></a>
<span class="sourceLineNo">129</span>        double xMin = 1.e20;<a name="line.129"></a>
<span class="sourceLineNo">130</span>        for (int k = 0; k &lt; this.xValues.length; k++) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>            xMin = Math.min(xMin, this.xValues[k].doubleValue());<a name="line.131"></a>
<span class="sourceLineNo">132</span>        }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>        double xMax = -1.e20;<a name="line.134"></a>
<span class="sourceLineNo">135</span>        for (int k = 0; k &lt; this.xValues.length; k++) {<a name="line.135"></a>
<span class="sourceLineNo">136</span>            xMax = Math.max(xMax, this.xValues[k].doubleValue());<a name="line.136"></a>
<span class="sourceLineNo">137</span>        }<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span>        double yMin = 1.e20;<a name="line.139"></a>
<span class="sourceLineNo">140</span>        for (int k = 0; k &lt; this.yValues.length; k++) {<a name="line.140"></a>
<span class="sourceLineNo">141</span>            yMin = Math.min(yMin, this.yValues[k].doubleValue());<a name="line.141"></a>
<span class="sourceLineNo">142</span>        }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>        double yMax = -1.e20;<a name="line.144"></a>
<span class="sourceLineNo">145</span>        for (int k = 0; k &lt; this.yValues.length; k++) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>            yMax = Math.max(yMax, this.yValues[k].doubleValue());<a name="line.146"></a>
<span class="sourceLineNo">147</span>        }<a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span>        Range xRange = new Range(xMin, xMax);<a name="line.149"></a>
<span class="sourceLineNo">150</span>        Range yRange = new Range(yMin, yMax);<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span>        xRange.getLength();<a name="line.152"></a>
<span class="sourceLineNo">153</span>        yRange.getLength();<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span>        // Determine the cell size<a name="line.155"></a>
<span class="sourceLineNo">156</span>        double dxGrid = xRange.getLength() / (numX - 1);<a name="line.156"></a>
<span class="sourceLineNo">157</span>        double dyGrid = yRange.getLength() / (numY - 1);<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span>        // Generate the grid<a name="line.159"></a>
<span class="sourceLineNo">160</span>        double x = 0.0;<a name="line.160"></a>
<span class="sourceLineNo">161</span>        for (int i = 0; i &lt; numX; i++) {<a name="line.161"></a>
<span class="sourceLineNo">162</span>            if (i == 0) {<a name="line.162"></a>
<span class="sourceLineNo">163</span>                x = xMin;<a name="line.163"></a>
<span class="sourceLineNo">164</span>            }<a name="line.164"></a>
<span class="sourceLineNo">165</span>            else {<a name="line.165"></a>
<span class="sourceLineNo">166</span>                x += dxGrid;<a name="line.166"></a>
<span class="sourceLineNo">167</span>            }<a name="line.167"></a>
<span class="sourceLineNo">168</span>            double y = 0.0;<a name="line.168"></a>
<span class="sourceLineNo">169</span>            for (int j = 0; j &lt; numY; j++) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>                int k = numY * i + j;<a name="line.170"></a>
<span class="sourceLineNo">171</span>                xGrid[k] = x;<a name="line.171"></a>
<span class="sourceLineNo">172</span>                if (j == 0) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>                    y = yMin;<a name="line.173"></a>
<span class="sourceLineNo">174</span>                }<a name="line.174"></a>
<span class="sourceLineNo">175</span>                else {<a name="line.175"></a>
<span class="sourceLineNo">176</span>                    y += dyGrid;<a name="line.176"></a>
<span class="sourceLineNo">177</span>                }<a name="line.177"></a>
<span class="sourceLineNo">178</span>                yGrid[k] = y;<a name="line.178"></a>
<span class="sourceLineNo">179</span>            }<a name="line.179"></a>
<span class="sourceLineNo">180</span>        }<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span>        // Map the nongrid data into the new regular grid<a name="line.182"></a>
<span class="sourceLineNo">183</span>        for (int kGrid = 0; kGrid &lt; xGrid.length; kGrid++) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>            double dTotal = 0.0;<a name="line.184"></a>
<span class="sourceLineNo">185</span>            zGrid[kGrid] = 0.0;<a name="line.185"></a>
<span class="sourceLineNo">186</span>            for (int k = 0; k &lt; this.xValues.length; k++) {<a name="line.186"></a>
<span class="sourceLineNo">187</span>                double xPt = this.xValues[k].doubleValue();<a name="line.187"></a>
<span class="sourceLineNo">188</span>                double yPt = this.yValues[k].doubleValue();<a name="line.188"></a>
<span class="sourceLineNo">189</span>                double d = distance(xPt, yPt, xGrid[kGrid], yGrid[kGrid]);<a name="line.189"></a>
<span class="sourceLineNo">190</span>                if (power != 1) {<a name="line.190"></a>
<span class="sourceLineNo">191</span>                    d = Math.pow(d, power);<a name="line.191"></a>
<span class="sourceLineNo">192</span>                }<a name="line.192"></a>
<span class="sourceLineNo">193</span>                d = Math.sqrt(d);<a name="line.193"></a>
<span class="sourceLineNo">194</span>                if (d &gt; 0.0) {<a name="line.194"></a>
<span class="sourceLineNo">195</span>                    d = 1.0 / d;<a name="line.195"></a>
<span class="sourceLineNo">196</span>                }<a name="line.196"></a>
<span class="sourceLineNo">197</span>                else { // if d is real small set the inverse to a large number<a name="line.197"></a>
<span class="sourceLineNo">198</span>                       // to avoid INF<a name="line.198"></a>
<span class="sourceLineNo">199</span>                    d = 1.e20;<a name="line.199"></a>
<span class="sourceLineNo">200</span>                }<a name="line.200"></a>
<span class="sourceLineNo">201</span>                if (this.zValues[k] != null) {<a name="line.201"></a>
<span class="sourceLineNo">202</span>                    // scale by the inverse of distance^power<a name="line.202"></a>
<span class="sourceLineNo">203</span>                    zGrid[kGrid] += this.zValues[k].doubleValue() * d;<a name="line.203"></a>
<span class="sourceLineNo">204</span>                }<a name="line.204"></a>
<span class="sourceLineNo">205</span>                dTotal += d;<a name="line.205"></a>
<span class="sourceLineNo">206</span>            }<a name="line.206"></a>
<span class="sourceLineNo">207</span>            zGrid[kGrid] = zGrid[kGrid] / dTotal;  //remove distance of the sum<a name="line.207"></a>
<span class="sourceLineNo">208</span>        }<a name="line.208"></a>
<span class="sourceLineNo">209</span><a name="line.209"></a>
<span class="sourceLineNo">210</span>        //initalize xValues, yValues, and zValues arrays.<a name="line.210"></a>
<span class="sourceLineNo">211</span>        initialize(<a name="line.211"></a>
<span class="sourceLineNo">212</span>            formObjectArray(xGrid), formObjectArray(yGrid),<a name="line.212"></a>
<span class="sourceLineNo">213</span>            formObjectArray(zGrid)<a name="line.213"></a>
<span class="sourceLineNo">214</span>        );<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>    }<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>    /**<a name="line.218"></a>
<span class="sourceLineNo">219</span>     * Calculates the distance between two points.<a name="line.219"></a>
<span class="sourceLineNo">220</span>     *<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * @param xDataPt  the x coordinate.<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * @param yDataPt  the y coordinate.<a name="line.222"></a>
<span class="sourceLineNo">223</span>     * @param xGrdPt  the x grid coordinate.<a name="line.223"></a>
<span class="sourceLineNo">224</span>     * @param yGrdPt  the y grid coordinate.<a name="line.224"></a>
<span class="sourceLineNo">225</span>     *<a name="line.225"></a>
<span class="sourceLineNo">226</span>     * @return The distance between two points.<a name="line.226"></a>
<span class="sourceLineNo">227</span>     */<a name="line.227"></a>
<span class="sourceLineNo">228</span>    protected double distance(double xDataPt,<a name="line.228"></a>
<span class="sourceLineNo">229</span>                              double yDataPt,<a name="line.229"></a>
<span class="sourceLineNo">230</span>                              double xGrdPt,<a name="line.230"></a>
<span class="sourceLineNo">231</span>                              double yGrdPt) {<a name="line.231"></a>
<span class="sourceLineNo">232</span>        double dx = xDataPt - xGrdPt;<a name="line.232"></a>
<span class="sourceLineNo">233</span>        double dy = yDataPt - yGrdPt;<a name="line.233"></a>
<span class="sourceLineNo">234</span>        return Math.sqrt(dx * dx + dy * dy);<a name="line.234"></a>
<span class="sourceLineNo">235</span>    }<a name="line.235"></a>
<span class="sourceLineNo">236</span><a name="line.236"></a>
<span class="sourceLineNo">237</span>}<a name="line.237"></a>




























































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